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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.

Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.

Essential Products to Maximize Engine Performance

Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:

  • Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
  • Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
  • Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
  • Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
  • Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.

Industry-Leading Benchmark Brands

We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.

Why you should Choose Optimiz Access for Your Engine Upgrades

Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.

Unleash Your Engine's Full Potential Today

Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.

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  • Categories: Alimentation
  • Categories: Circuit d'air
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Cablage liaison répartiteur sortie coupe circuit Megane N4
      Cablage liaison répartiteur sortie coupe circuit Megane N4
      €25.66Price
      Cablage liaison répartiteur sortie coupe circuit Megane N4
          Cablage liaison répartiteur sortie coupe circuit Megane N4
          €25.66Price
          Câble liaison batterie entrée coupe circuit Megane N4
              Câble liaison batterie entrée coupe circuit Megane N4
              €25.58Price
              Câble liaison batterie entrée coupe circuit Megane N4
                  Câble liaison batterie entrée coupe circuit Megane N4
                  €25.58Price
                  En Stock
                  €10.02 Price
                  En Stock
                  €10.02 Price
                  Joint de cold side
                      COLD SIDE SEAL – JTCOLD The cold side seal, reference JTCOLD , is a sealing component intended for use on the cold side of an air circuit. It helps provide an airtight connection between...
                      €10.02Price
                      Joint de cold side
                          COLD SIDE SEAL – JTCOLD The cold side seal, reference JTCOLD , is a sealing component intended for use on the cold side of an air circuit. It helps provide an airtight connection between...
                          €10.02Price
                          Kit joint torique pour régulateur de pression de rampe
                              Kit joint torique pour régulateur de pression de rampe
                              €13.08Price
                              Kit joint torique pour régulateur de pression de rampe
                                  Kit joint torique pour régulateur de pression de rampe
                                  €13.08Price
                                  Borne positive batterie Megane 3 RS et N4
                                      Ensure perfect electrical conductivity with this genuine Renault positive battery terminal . Specifically designed for the Renault Megane 3 RS and Megane N4 , this battery clamp guarantees reliable starting and a stable power supply for your onboard electronic equipment, even under intensive use. ...
                                      €10.58Price
                                      Borne positive batterie Megane 3 RS et N4
                                          Ensure perfect electrical conductivity with this genuine Renault positive battery terminal . Specifically designed for the Renault Megane 3 RS and Megane N4 , this battery clamp guarantees reliable starting and a stable power supply for your onboard electronic equipment, even under intensive use. ...
                                          €10.58Price
                                          Câble alimentation protection batterie Megane 3 RS et N4
                                              Câble alimentation protection batterie Megane 3 RS et N4
                                              €96.72Price
                                              Câble alimentation protection batterie Megane 3 RS et N4
                                                  Câble alimentation protection batterie Megane 3 RS et N4
                                                  €96.72Price
                                                  En Stock
                                                  €126.80 €181.14 Regular price -30% off Price
                                                  En Stock
                                                  €126.80 €181.14 Regular price -30% off Price
                                                  GMV (Ventilateur) type chauffo Twingo RS et R1
                                                      GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                                                      €126.80€181.14Regular price-30% offPrice
                                                      GMV (Ventilateur) type chauffo Twingo RS et R1
                                                          GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                                                          €126.80€181.14Regular price-30% offPrice
                                                          En Stock
                                                          €361.00 Price
                                                          En Stock
                                                          €361.00 Price
                                                          Kit Admisssion Forge Motorsport Megane 4 RSKit Admisssion Forge Motorsport Megane 4 RS
                                                              Kit Admisssion Forge Motorsport Megane 4 RS Produit developpé dans le but de  - Garder des temperatures d'admission interessantes et les plus basses possibles - Ameliorer l'afflux d'air - Ameliorer l'esthetique de la baie moteur Apres de nombreux essais, les resultats obtenus sont + 15ch Ce gain peut etre superieur en associant ce kit...
                                                              €361.00Price
                                                              Kit Admisssion Forge Motorsport Megane 4 RSKit Admisssion Forge Motorsport Megane 4 RS
                                                                  Kit Admisssion Forge Motorsport Megane 4 RS Produit developpé dans le but de  - Garder des temperatures d'admission interessantes et les plus basses possibles - Ameliorer l'afflux d'air - Ameliorer l'esthetique de la baie moteur Apres de nombreux essais, les resultats obtenus sont + 15ch Ce gain peut etre superieur en associant ce kit...
                                                                  €361.00Price
                                                                  Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                                      €187.01Price
                                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                                          Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                                          €187.01Price
                                                                          En Stock
                                                                          €32.92 Price
                                                                          En Stock
                                                                          €32.92 Price
                                                                          Rampe injection Clio 2 RS 172 phase 2 et 182
                                                                              Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                                              €32.92Price
                                                                              Rampe injection Clio 2 RS 172 phase 2 et 182
                                                                                  Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                                                  €32.92Price
                                                                                  Régulateur (membrane) pression gaz collecteur admission Clio 3 RS
                                                                                      Régulateur pression gaz carter Clio 3 RS
                                                                                      €61.60Price
                                                                                      Régulateur (membrane) pression gaz collecteur admission Clio 3 RS
                                                                                          €61.60Price
                                                                                          Joint anti-usure jonction écope divergent Twingo R2
                                                                                              Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                              €8.48Price
                                                                                              Joint anti-usure jonction écope divergent Twingo R2
                                                                                                  Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                  €8.48Price
                                                                                                  Dispo selon configuration
                                                                                                  €6.00 Price
                                                                                                  Dispo selon configuration
                                                                                                  €6.00 Price
                                                                                                  Tuyau de dépressionTuyau de dépression
                                                                                                      Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                                                                                      €6.00Price
                                                                                                      Tuyau de dépressionTuyau de dépression
                                                                                                          Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                                                                                          €6.00Price
                                                                                                          En Stock
                                                                                                          €50.86 Price
                                                                                                          En Stock
                                                                                                          €50.86 Price
                                                                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                              Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                              €50.86Price
                                                                                                              Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                                  Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                                  €50.86Price
                                                                                                                  Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                                      Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                                      €140.75Price
                                                                                                                      Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                                          Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                                          €140.75Price
                                                                                                                          Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                                              Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                                              €119.40Price
                                                                                                                              Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                                                  Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                                                  €119.40Price
                                                                                                                                  En Stock
                                                                                                                                  €178.04 Price
                                                                                                                                  En Stock
                                                                                                                                  €178.04 Price
                                                                                                                                  Pompe à Essence Clio 2 RS et X65 Cup
                                                                                                                                      Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                                                                      €178.04Price
                                                                                                                                      Pompe à Essence Clio 2 RS et X65 Cup
                                                                                                                                          Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                                                                          €178.04Price
                                                                                                                                          Durite Admission Clio 2 RSSilicone Air Induction Hose for Renault Clio 2 RS
                                                                                                                                              Stop letting a perished or cracked factory hose choke your Clio 2 RS engine. This reinforced silicone induction hose is a direct replacement for the OEM rubber part, which is notorious for collapsing under vacuum. Available in various colors for a subtle or race-inspired customization , it ensures...
                                                                                                                                              €69.00Price
                                                                                                                                              Durite Admission Clio 2 RSSilicone Air Induction Hose for Renault Clio 2 RS
                                                                                                                                                  Stop letting a perished or cracked factory hose choke your Clio 2 RS engine. This reinforced silicone induction hose is a direct replacement for the OEM rubber part, which is notorious for collapsing under vacuum. Available in various colors for a subtle or race-inspired customization , it ensures...
                                                                                                                                                  €69.00Price
                                                                                                                                                  Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                                                                                                      Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                                                                                                      €138.05Price
                                                                                                                                                      Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                                                                                                          Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                                                                                                          €138.05Price
                                                                                                                                                          En Stock
                                                                                                                                                          €17.45 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €17.45 Price
                                                                                                                                                          Support inférieur écope boitier filtre Twingo R2
                                                                                                                                                              Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                                              €17.45Price
                                                                                                                                                              Support inférieur écope boitier filtre Twingo R2
                                                                                                                                                                  Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                                                  €17.45Price
                                                                                                                                                                  Dispo selon configuration
                                                                                                                                                                  €199.00 Price
                                                                                                                                                                  Dispo selon configuration
                                                                                                                                                                  €199.00 Price
                                                                                                                                                                  Admission Forge Clio 4 RS Euro 6Admission Forge Clio 4 RS Euro 6
                                                                                                                                                                      Ce kit est spécialement conçu pour la Renault Clio 4 RS Trophy (ne convient pas aux clio 4 RS non Trophy) Il comprend le tuyau de silicone conçu sur mesure combiné avec un haut débit filtre de cône non huilée en coton permettant une excellente filtration. Tout le nécessaire est fourni dans le kit, y compris les colliers en acier inoxydable de qualité. Ce kit a été testé et permet un gain...
                                                                                                                                                                      €199.00Price
                                                                                                                                                                      Admission Forge Clio 4 RS Euro 6Admission Forge Clio 4 RS Euro 6
                                                                                                                                                                          Ce kit est spécialement conçu pour la Renault Clio 4 RS Trophy (ne convient pas aux clio 4 RS non Trophy) Il comprend le tuyau de silicone conçu sur mesure combiné avec un haut débit filtre de cône non huilée en coton permettant une excellente filtration. Tout le nécessaire est fourni dans le kit, y compris les colliers en acier inoxydable de qualité. Ce kit a été testé et permet un gain...
                                                                                                                                                                          €199.00Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €59.00 €69.41 Regular price -15% off Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €59.00 €69.41 Regular price -15% off Price
                                                                                                                                                                          Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                                                                                                                              Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                                                                                                                              €59.00€69.41Regular price-15% offPrice
                                                                                                                                                                              Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                                                                                                                                  Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                                                                                                                                  €59.00€69.41Regular price-15% offPrice
                                                                                                                                                                                  DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                                                                                                                      Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                                                                                                                      €224.09Price
                                                                                                                                                                                      DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                                                                                                                          Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                                                                                                                          €224.09Price
                                                                                                                                                                                          Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                                                                                                                                                                                              Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                                                                                                                                                                                              €159.77Price
                                                                                                                                                                                              Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                                                                                                                                                                                                  Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                                                                                                                                                                                                  €159.77Price